【摘要】 相对于传统网络构架来说,软件定义网络(software-defined networking,SDN)是一种颠覆性的网络技术构架创新,这种网络架构打破了网络领域多年来的沉寂,逐渐成为各个专业领域的热门议题。从电信业(communication technology,CT)和信息业(information technology,IT)的比较出发,对当今网络技术发展的瓶颈进行分析,描述了SDN和网络功能虚拟化(network function virtualization,NFV)2种典型的标准网络架构,阐述了SDN作为网络重构技术的必要性,详细分析了其核心价值、面临的主要挑战以及应用场景,继而引申到产业链重构的机遇和挑战;阐述了对SDN战略层面的相关思考。更多还原

【Abstract】 Compared with traditional network architecture,software-defined networking( SDN) is a disruptive innovation of network architecture,and this innovative network architecture breaks the silence over the years in the network area,becoming the hot topic in various professional fields. Firstly,the author analyses the bottleneck in today’s network technology development by the comparison of CT and IT industries. Secondly,the author focuses on SDN and NFV two typical standard network architecture which indicates the necessity of SDN as a network rearchitecting technology,meanwhile elaborates on its core values,as well as the main challenges facing scenarios,and then extends to the opportunities and challenges of the industry chain reconstruction. Finally,the author presents some thinking of SDN in the strategic level.更多还原